Once More, With Feeling - S6-E7
Question: Is there something wrong with Sweet (Hinton Battle)'s left eye? He seems to keep it closed or half-lidded during his introductory song, the camera and lighting keeps it out of sight most of the time, and when he does open it, such as at 29:58, it's looking ahead in comparison to his right, which is focused on something else.
Chosen answer: He could have a lazy eye, (aka Amblyopia) but doesn't in other work and interviews, so it's probably just selective camera/lighting work.